i have an m20 flywheel!!! and clutch disk! pressure plate is bent but you can hammer it back :p
the transmission bolts are the same...or should be. what tranny does the '84 318 use?
save yourself the trouble and find a getrag 260 tranny and its driveshaft, instead of having to mix and match the shafts. you will just need to hand bend the selector rod and get a custom tranny brace with the g260.
and look for a booster thats from an iX!!! its got the spacer on it to fit the stock holes of the body! the other boosters require you to weld the rod in them into a different length.
you can use the stock booster...if you seriously modify the intake manifold. shave it down or melt it down!
for your gasket needs!